Almost every launcher has a built-in search feature. The difference with search-based launchers for me is having only widgets or even just plain nothing on the home screen, launching apps from a small favorites bar or by typing the first few letters of the apps name. It's honestly faster than looking at many screens full of folders of apps ever was.

https://sesame.ninja/ Sesame is cool, but not FOSS, and last time I tried it some years back it had some limitations for free users or didn't integrate into my launcher well or something like that.